Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• Embedded URL info EMBEDDED_URL
  One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
  URL https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/b742b4a19ca91dce481c8324c43d59b2/gexowipiriragorasit.pdf In PDF document text

  • http://macautemple.com/userfiles/file/rivobo.pdfIn PDF document text
  • http://rauvuonsach.net/images/uploads/files/nudibibewigakeje.pdfIn PDF document text
  • http://thegioidahoacuong.com/uploads/image/files/fixipesuvinutek.pdfIn PDF document text
  • http://xn--rssx31a7tec6p.com/upload/userfiles/files/20210628120738.pdfIn PDF document text
  • http://stroisvias.ru/userfiles/file/49443541478.pdfIn PDF document text
  • http://drironcat.com/images/file/sofozevanotavasami.pdfIn PDF document text
  • https://xo-sound.ru/userfiles/file/82789097498.pdfIn PDF document text
  • http://paintmaster.hu/js/ckfinder/userfiles/files/gafitawavoga.pdfIn PDF document text
  • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be978fc1c5f---rewowuti.pdfIn PDF document text
  • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/becec29f3cd4843ac2b47844568e53c5/tizikotadolija.pdfIn PDF document text
  • https://iamtimeshare.com/userfiles/file/34304971681.pdfIn PDF document text
  • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/20bce76cab2b6b8047c5b23ce70fc415/motugofokenimew.pdfIn PDF document text
  • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbeb2d3dbee---40121399889.pdfIn PDF document text
  • http://budka39.ru/files/61251588491.pdfIn PDF document text
  • https://childrencareandliteracysociety.org/userfiles/files/xukuwapatasejaredekipa.pdfIn PDF document text
  • http://metapolar.hu/tmp/15010103301.pdfIn PDF document text
  • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/046222a5afad7a6ea2fcbe3f9e005fb9/77320465916.pdfIn PDF document text
  • https://hotelite.in/userfiles/file/laxipoveze.pdfIn PDF document text
  • http://gesundheit-im-blog.de/userfiles/file/37475552379.pdfIn PDF document text
  • http://ahxxzx.com/userfiles/202105/file/wamovorir.pdfIn PDF document text
  • http://udmvdpo.ru/images/files/50518620776.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=frederic+chopin+nocturne+op+9PDF link annotation
  • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b361a687b---49094968351.pdfIn PDF document text
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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